After the contest has finished, the Highly Undetectable steGo is no longer undetectable. Are there any good news then? Yes, there are.

During the contest, a significant progress in steganalasis has been

done and many interesting questions and problems have been opened. You can read about them in more detail in the paper "Break Our Steganographic System --- the ins and outs of organizing BOSS" from Information Hiding Workshop 2011 in Prague.

What else? We have finished the BossBase, now featuring 10 000 images in raw format together with downsampled versions. You are more then welcomed to use these images for your research. As usual, they are available in the Material section.

We hope that this image database improves the reproducibility of the results being published. If you use these images, please cite the paper

"Break Our Steganographic System --- the ins and outs of organizing BOSS", P. Bas, T. Filler, T. Pevny, In proceedings of Information Hiding Conference in Prague, 2011 [pdf , bib entry],

where the database is described in detail.